US3865078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam finish applicator
Assignee: EIDP Inc
•
Filing: 1972-06-05
•
Granted: 1975-02-11
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Expires: 1992-06-05
Abstract
Abstract A method for applying a solution to a moving textile tow includes the steps of preparing a fine bubble foam from the solution with air and applying the foam to opposite sides of the moving tow and then drying the coating. The apparatus includes a hollow applicator cylinder having a slot through its wall, a dispersion filter within the cylinder and sources of pressurized air and solution which are mixed and passed through one or more sintered material filters before reaching the applicator cylinder. A perforated plate is usually fitted in the slot.
Inventors
- 👤 Howitt Jack Renato De
- 👤 Imre Mirko Jonkoff
- 👤 Robert Ernest Stoveken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:55
CPC Classifications
D; D06; D06B; D06B1/00; D06B1/08; D06B19/00; D06B19/0088; D06B19/0094
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
An apparatus for preparing and applying a foam solution from a pressurized gas and a liquid finish to a textile web moving in a path including means for moving the tow in said path, said apparatus comprising: an elongated housing positioned across said path, said housing having Walls forming an inner chamber and having a longitudinal slot through one wall, said slot being in communication with said chamber and disposed toward said path; a distribution plate fitted in said slot, said plate having outer and inner surfaces connected by a plurality of holes, said outer surface being adjacent said path, said holes expanding to a larger diameter at said outer surface; a source of liquid finish; a source of pressurized gas; means for mixing said liquid finish and said gas; and a diffusion filter positioned in said chamber, said filter being supplied with a mixture of liquid finish and gas by said means for mixing.
Claim 2
Independent Claim
155 words
An apparatus for preparing and applying a foam solution from a pressurized gas and a liquid finish to a textile web moving in a path including means for moving the tow in said path, said apparatus comprising: an elongated housing positioned across said path, said housing having Walls forming an inner chamber and having a longitudinal slot through one wall, said slot being in communication with said chamber and disposed toward said path; a distribution plate fitted in said slot, said plate having outer and inner surfaces connected by a plurality of holes, said outer surface being adjacent said path, said holes expanding to a larger diameter at said outer surface; a source of liquid finish; a source of pressurized gas; means for mixing said liquid finish and said gas; and a diffusion filter positioned in said chamber, said filter being supplied with a mixture of liquid finish and gas by said means for mixing.
Claim 3
Dependent Claim
31 words
The apparatus as defined in claim 1, there being a pair of said housings, one on each side of said path to apply foam solution to opposite sides of said web.
Claim 4
Dependent Claim
21 words
The apparatus as defined in claim 1, including means for adjusting the length of said slot to accommodate different web widths.
References Cited (Backward Citations)
US2533167A
Cited
US2678024A
Cited
US3251092A
Cited
US3418970A
Cited
US3466690A
Cited
US3751755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |